I have a SP01 T and used it competitively in an IDPA season recently- it served me well. I prefer decockers over the safety only variants as I like the simplicity of just having to draw and fire, especially in IDPA games.
I have shot MS guns in my games, and have done well, but as I mostly shoot revolvers, striker guns and decocker SA/DA guns, it minimizes muscle memory for me.
That’s my story. I know others who have long history with 1911s and prefer MS SP01s. To each their own